344 lines
14 KiB
Python
344 lines
14 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2012, Nachi Ueno, NTT MCL, Inc.
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# All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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from oslo.config import cfg
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from quantum.common import exceptions as exc
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from quantum.db import api as db
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from quantum.db import db_base_plugin_v2
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from quantum.db import l3_db
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from quantum.db import models_v2
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from quantum.extensions.flavor import (FLAVOR_NETWORK, FLAVOR_ROUTER)
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from quantum.openstack.common import importutils
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from quantum.openstack.common import log as logging
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# NOTE (e0ne): this import is needed for config init
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from quantum.plugins.metaplugin.common import config
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from quantum.plugins.metaplugin import meta_db_v2
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from quantum.plugins.metaplugin.meta_models_v2 import (NetworkFlavor,
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RouterFlavor)
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LOG = logging.getLogger(__name__)
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# Metaplugin Exceptions
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class FlavorNotFound(exc.NotFound):
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message = _("Flavor %(flavor)s could not be found")
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class FaildToAddFlavorBinding(exc.QuantumException):
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message = _("Failed to add flavor binding")
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class MetaPluginV2(db_base_plugin_v2.QuantumDbPluginV2,
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l3_db.L3_NAT_db_mixin):
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def __init__(self, configfile=None):
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LOG.debug(_("Start initializing metaplugin"))
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self.supported_extension_aliases = \
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cfg.CONF.META.supported_extension_aliases.split(',')
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self.supported_extension_aliases += ['flavor', 'router']
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# Ignore config option overapping
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def _is_opt_registered(opts, opt):
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if opt.dest in opts:
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return True
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else:
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return False
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cfg._is_opt_registered = _is_opt_registered
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# Keep existing tables if multiple plugin use same table name.
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db.model_base.QuantumBase.__table_args__ = {'keep_existing': True}
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self.plugins = {}
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plugin_list = [plugin_set.split(':')
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for plugin_set
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in cfg.CONF.META.plugin_list.split(',')]
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for flavor, plugin_provider in plugin_list:
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self.plugins[flavor] = self._load_plugin(plugin_provider)
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# Needed to clear _ENGINE for each plugin
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db._ENGINE = None
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self.l3_plugins = {}
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l3_plugin_list = [plugin_set.split(':')
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for plugin_set
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in cfg.CONF.META.l3_plugin_list.split(',')]
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for flavor, plugin_provider in l3_plugin_list:
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if flavor in self.plugins:
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self.l3_plugins[flavor] = self.plugins[flavor]
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else:
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# For l3 only plugin
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self.l3_plugins[flavor] = self._load_plugin(plugin_provider)
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db._ENGINE = None
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self.default_flavor = cfg.CONF.META.default_flavor
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if self.default_flavor not in self.plugins:
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raise exc.Invalid(_('default_flavor %s is not plugin list') %
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self.default_flavor)
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self.default_l3_flavor = cfg.CONF.META.default_l3_flavor
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if self.default_l3_flavor not in self.l3_plugins:
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raise exc.Invalid(_('default_l3_flavor %s is not plugin list') %
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self.default_l3_flavor)
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db.configure_db()
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self.extension_map = {}
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if not cfg.CONF.META.extension_map == '':
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extension_list = [method_set.split(':')
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for method_set
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in cfg.CONF.META.extension_map.split(',')]
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for method_name, flavor in extension_list:
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self.extension_map[method_name] = flavor
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self.default_flavor = cfg.CONF.META.default_flavor
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def _load_plugin(self, plugin_provider):
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LOG.debug(_("Plugin location: %s"), plugin_provider)
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plugin_klass = importutils.import_class(plugin_provider)
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return plugin_klass()
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def _get_plugin(self, flavor):
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if flavor not in self.plugins:
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raise FlavorNotFound(flavor=flavor)
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return self.plugins[flavor]
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def _get_l3_plugin(self, flavor):
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if flavor not in self.l3_plugins:
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raise FlavorNotFound(flavor=flavor)
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return self.l3_plugins[flavor]
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def __getattr__(self, key):
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# At first, try to pickup extension command from extension_map
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if key in self.extension_map:
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flavor = self.extension_map[key]
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plugin = self._get_plugin(flavor)
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if plugin and hasattr(plugin, key):
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return getattr(plugin, key)
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# Second, try to match extension method in order of plugin list
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for flavor, plugin in self.plugins.items():
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if hasattr(plugin, key):
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return getattr(plugin, key)
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# if no plugin support the method, then raise
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raise AttributeError
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def _extend_network_dict(self, context, network):
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flavor = self._get_flavor_by_network_id(context, network['id'])
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network[FLAVOR_NETWORK] = flavor
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def _is_l3_plugin(self, plugin):
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if hasattr(plugin, 'supported_extension_aliases'):
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return 'router' in plugin.supported_extension_aliases
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return False
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def create_network(self, context, network):
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n = network['network']
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flavor = n.get(FLAVOR_NETWORK)
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if str(flavor) not in self.plugins:
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flavor = self.default_flavor
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plugin = self._get_plugin(flavor)
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with context.session.begin(subtransactions=True):
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net = plugin.create_network(context, network)
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if not self._is_l3_plugin(plugin):
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self._process_l3_create(context, network['network'], net['id'])
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self._extend_network_dict_l3(context, net)
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LOG.debug(_("Created network: %(net_id)s with flavor "
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"%(flavor)s"), {'net_id': net['id'], 'flavor': flavor})
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try:
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meta_db_v2.add_network_flavor_binding(context.session,
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flavor, str(net['id']))
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except:
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LOG.exception(_('Failed to add flavor bindings'))
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plugin.delete_network(context, net['id'])
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raise FaildToAddFlavorBinding()
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LOG.debug(_("Created network: %s"), net['id'])
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self._extend_network_dict(context, net)
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return net
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def update_network(self, context, id, network):
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flavor = meta_db_v2.get_flavor_by_network(context.session, id)
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plugin = self._get_plugin(flavor)
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with context.session.begin(subtransactions=True):
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net = plugin.update_network(context, id, network)
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if not self._is_l3_plugin(plugin):
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self._process_l3_update(context, network['network'], id)
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self._extend_network_dict_l3(context, net)
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return net
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def delete_network(self, context, id):
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flavor = meta_db_v2.get_flavor_by_network(context.session, id)
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plugin = self._get_plugin(flavor)
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return plugin.delete_network(context, id)
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def get_network(self, context, id, fields=None):
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flavor = meta_db_v2.get_flavor_by_network(context.session, id)
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plugin = self._get_plugin(flavor)
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net = plugin.get_network(context, id, fields)
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net['id'] = id
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if not fields or 'router:external' in fields:
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self._extend_network_dict_l3(context, net)
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if not fields or FLAVOR_NETWORK in fields:
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self._extend_network_dict(context, net)
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if fields and 'id' not in fields:
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del net['id']
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return net
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def get_networks_with_flavor(self, context, filters=None,
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fields=None):
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collection = self._model_query(context, models_v2.Network)
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model = NetworkFlavor
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collection = collection.join(model,
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models_v2.Network.id == model.network_id)
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if filters:
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for key, value in filters.iteritems():
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if key == FLAVOR_NETWORK:
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column = NetworkFlavor.flavor
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else:
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column = getattr(models_v2.Network, key, None)
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if column:
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collection = collection.filter(column.in_(value))
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return [self._make_network_dict(c, fields) for c in collection.all()]
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def get_networks(self, context, filters=None, fields=None):
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nets = self.get_networks_with_flavor(context, filters, None)
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if filters:
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nets = self._filter_nets_l3(context, nets, filters)
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nets = [self.get_network(context, net['id'], fields)
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for net in nets]
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return nets
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def _get_flavor_by_network_id(self, context, network_id):
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return meta_db_v2.get_flavor_by_network(context.session, network_id)
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def _get_flavor_by_router_id(self, context, router_id):
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return meta_db_v2.get_flavor_by_router(context.session, router_id)
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def _get_plugin_by_network_id(self, context, network_id):
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flavor = self._get_flavor_by_network_id(context, network_id)
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return self._get_plugin(flavor)
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def create_port(self, context, port):
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p = port['port']
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if 'network_id' not in p:
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raise exc.NotFound
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plugin = self._get_plugin_by_network_id(context, p['network_id'])
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return plugin.create_port(context, port)
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def update_port(self, context, id, port):
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port_in_db = self.get_port(context, id)
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plugin = self._get_plugin_by_network_id(context,
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port_in_db['network_id'])
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return plugin.update_port(context, id, port)
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def delete_port(self, context, id, l3_port_check=True):
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port_in_db = self.get_port(context, id)
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plugin = self._get_plugin_by_network_id(context,
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port_in_db['network_id'])
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if l3_port_check:
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self.prevent_l3_port_deletion(context, id)
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self.disassociate_floatingips(context, id)
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return plugin.delete_port(context, id)
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def create_subnet(self, context, subnet):
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s = subnet['subnet']
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if 'network_id' not in s:
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raise exc.NotFound
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plugin = self._get_plugin_by_network_id(context,
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s['network_id'])
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return plugin.create_subnet(context, subnet)
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def update_subnet(self, context, id, subnet):
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s = self.get_subnet(context, id)
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plugin = self._get_plugin_by_network_id(context,
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s['network_id'])
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return plugin.update_subnet(context, id, subnet)
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def delete_subnet(self, context, id):
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s = self.get_subnet(context, id)
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plugin = self._get_plugin_by_network_id(context,
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s['network_id'])
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return plugin.delete_subnet(context, id)
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def _extend_router_dict(self, context, router):
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flavor = self._get_flavor_by_router_id(context, router['id'])
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router[FLAVOR_ROUTER] = flavor
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def create_router(self, context, router):
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r = router['router']
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flavor = r.get(FLAVOR_ROUTER)
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if str(flavor) not in self.l3_plugins:
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flavor = self.default_l3_flavor
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plugin = self._get_l3_plugin(flavor)
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with context.session.begin(subtransactions=True):
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r_in_db = plugin.create_router(context, router)
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LOG.debug(_("Created router: %(router_id)s with flavor "
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"%(flavor)s"),
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{'router_id': r_in_db['id'], 'flavor': flavor})
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meta_db_v2.add_router_flavor_binding(context.session,
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flavor, str(r_in_db['id']))
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LOG.debug(_("Created router: %s"), r_in_db['id'])
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self._extend_router_dict(context, r_in_db)
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return r_in_db
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def update_router(self, context, id, router):
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flavor = meta_db_v2.get_flavor_by_router(context.session, id)
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plugin = self._get_l3_plugin(flavor)
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return plugin.update_router(context, id, router)
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def delete_router(self, context, id):
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flavor = meta_db_v2.get_flavor_by_router(context.session, id)
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plugin = self._get_l3_plugin(flavor)
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return plugin.delete_router(context, id)
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def get_router(self, context, id, fields=None):
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flavor = meta_db_v2.get_flavor_by_router(context.session, id)
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plugin = self._get_l3_plugin(flavor)
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router = plugin.get_router(context, id, fields)
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if not fields or FLAVOR_ROUTER in fields:
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self._extend_router_dict(context, router)
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return router
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def get_routers_with_flavor(self, context, filters=None,
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fields=None):
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collection = self._model_query(context, l3_db.Router)
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r_model = RouterFlavor
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collection = collection.join(r_model,
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l3_db.Router.id == r_model.router_id)
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if filters:
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for key, value in filters.iteritems():
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if key == FLAVOR_ROUTER:
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column = RouterFlavor.flavor
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else:
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column = getattr(l3_db.Router, key, None)
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if column:
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collection = collection.filter(column.in_(value))
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return [self._make_router_dict(c, fields) for c in collection.all()]
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def get_routers(self, context, filters=None, fields=None):
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routers = self.get_routers_with_flavor(context, filters,
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None)
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return [self.get_router(context, router['id'],
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fields)
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for router in routers]
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